Ok, so I just got back from 10 fabulous days at the World with my new camera in tow. I had no idea how many pictures I would end up taking!! I need to remember to bring more memory cards for the next trip.
Anyway, I ended up carrying the camera bag with me every day, which was not my original plan. I found that the bag was very comfortable even when fully loaded. It did not bother my back or neck at all, and we did a few marathon days! It was very easy on and off, and it fit well on the rides. I also liked that the camera was easy to access as I did end up putting it in and out of the bag a lot as we went on rides and such.
As for negatives, I found that it was a little small for park touring. As the mom, I usually end up carrying the daily supplies for the family, water, Band-Aids, snacks, etc. There was really no room in the bag for extras and I had to get creative. Part way through the week we ended up buying another camera bag for the video camera so that my husband could carry it. He's the videographer anyway so that made sense for us. I didn't carry the gorilla pod into the parks and I had a water bottle attachment for the outside of the bag which ended up being a necessity.
My only really bad experience with the bag happened in our hotel room. It was late night after we had been in the parks all day. I had the bag on the bed and didn't realize that I had not zipped up the camera compartment. I picked the bag up and the camera went flying out on to the floor.

The uv filter that I had on the lens shattered into a million little shards all over the carpet! Thank goodness the camera and lens were unharmed though.
Overall, I really liked how the bag worked and would definitely recommend it.